High Resolution = D2504040A.JCV ( Size: 692129) ---> 37xx correct
D3084010A.jcv 331000KB ---> nuvi 765 correct
D2152010A.JCV ---> New CNE 2011.40 37xx series JCV (read [Only registered and activated users can see links. ] ) but it works in 2xxx too- Not easy to understand which one is better in 37xx series, just try it, anyway it's buggy coz it shows just the first one on your planned trip-